PIC12CE519-04/P - 8-Bit 4MHz OTP MCU, 1.5KB, 8-PDIP | Microchip
MPN: PIC12CE519-04/P β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.2 | $22.00 |
| 100 | $1.95 | $195.00 |
| 500 | $1.7 | $850.00 |
| 1,000 | $1.5 | $1,500.00 |
PIC12CE519-04/P Overview
An 8-bit CMOS microcontroller (often called an MCU or micro-controller unit) is a small computing subsystem on a single integrated circuit that combines a CPU, program memory, data memory, and configurable peripheral I/O. Within the broader taxonomy it sits under microcontroller -> embedded controller -> SoC -> semiconductor, and within Microchip's lineup the PIC12CE519 belongs to the baseline-level PIC12C5xx family, optimized for compact, low-pin-count, cost-sensitive applications that need simple deterministic control.
Key features of the PIC12CE519-04/P include: 4 MHz maximum clock with selectable internal/external oscillator, 6 bidirectional I/O pins, 25 mA sink/source capability per I/O for direct LED or relay drive, hardware UART (SCI) and comparators are not present in this device, but it provides a synchronous serial port (SSP) supporting SPI and I2C master/slave modes, plus on-chip EEPROM for non-volatile parameter storage. The device operates from 3.0 V to 5.5 V with Power-on Reset, brown-out reset, and watchdog timer for robust field deployment.
The architecture uses a Harvard RISC core with only 33 single-word single-cycle instructions, simplifying firmware development in assembly or C (via MPLAB XC8). The internal 4 MHz RC oscillator can be calibrated to +/- 1% using a factory-stored calibration value, eliminating the need for an external resonator in space-constrained designs.
Typical applications include smart-card reader front-ends, electronic locks, battery chargers, remote controls, appliance timers, and low-cost sensor interface boards. Industrial use cases range from simple PID loops in HVAC damper actuators to status indicator controllers in uninterruptible power supplies.
When designing with this device, allocate the 6 I/O pins carefully: at least two are typically consumed by ICSP programming (GP0/GP1), leaving four for application use. Always reserve the ICD2/ICD3 programming header footprint even on production boards; the device is OTP and cannot be reprogrammed. Use a 100 nF decoupling capacitor within 5 mm of VDD and a 10 kohm pull-up on MCLR.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not found in the manufacturer datasheet alone, and is intended as an engineering reference for sourcing, replacement, and integration decisions.
Drop-in alternatives for PIC12CE519-04/P β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC12CE519-04/P (same form factor and footprint) β differing in Core Architecture, Package, Operating Temperature, Data RAM, Program Memory Size.
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Request AlternativesPIC12CE519-04/P Maximum Ratings & Electrical Characteristics
| Family | PIC12C5xx / PIC12CE5xx |
| Core Architecture | 8-bit RISC (Harvard) |
| CPU Core | PIC12 |
| Maximum Clock Frequency | 4 MHz |
| Instruction Cycle Time | 1 us (200 ns per instruction) |
| Instruction Set Size | 33 instructions (single-word, single-cycle) |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 1.5 KB (1K x 12) |
| Data RAM | 41 bytes |
| Data EEPROM | 16 bytes |
| I/O Pins | 6 |
| I/O Sink/Source Current | 25 mA per pin |
| Supply Voltage | 3.0 V to 5.5 V |
| Operating Temperature | 0C to +70C (commercial) |
| Oscillator Options | Internal 4 MHz RC, external RC, external crystal, LP |
| Package | 8-Pin PDIP (DIP-8, 300 mil) |
| Mounting Type | Through-Hole |
| MSL Level | 1 (unlimited) |
| Peripherals | Watchdog Timer, Power-on Reset, Brown-out Reset |
PIC12CE519-04/P Pin Configuration
| Pin 1 | GP5/OSC1/CLKIN β Bidirectional I/O pin GP5 / oscillator input / external clock input |
| Pin 2 | GP4/OSC2/CLKOUT β Bidirectional I/O pin GP4 / oscillator output / clock output |
| Pin 3 | GP3/MCLR/VPP β Input-only pin GP3 / Master Clear reset (active low) / programming voltage |
| Pin 4 | GP2/T0CKI/INT/CCP1 β Bidirectional I/O pin GP2 / Timer0 clock input / external interrupt / Capture-Compare-PWM |
| Pin 5 | GP1/ICSPCLK β Bidirectional I/O pin GP1 / ICSP serial programming clock |
| Pin 6 | GP0/ICSPDAT β Bidirectional I/O pin GP0 / ICSP serial programming data |
| Pin 7 | VSS β Ground reference |
| Pin 8 | VDD β Positive supply voltage (3.0 V to 5.5 V) |
Typical Applications
PIC12CE519-04/P is suitable for 8 applications: Electronic Door Lock Controller, Remote Control Transmitter, Battery Charger Indicator, Appliance Timer Controller, Sensor Interface Front-End, LED Display Driver Controller, Smart Card / RFID Reader Interface, Toys and Educational Electronics.
Electronic Door Lock Controller
The PIC12CE519-04/P fits electronic door lock controllers thanks to its 1.5 KB OTP program memory, 41 bytes RAM, and 25 mA I/O drive directly powering a small solenoid or relay. The internal 4 MHz RC oscillator eliminates external resonator cost, while on-chip 16-byte EEPROM stores user PIN codes and lock state across power cycles. Brown-out reset prevents solenoid chatter during low-battery conditions, and Sleep mode below 1 uA extends battery life in keypad-only locks. The 8-PDIP package suits through-hole assembly on the lock PCB, and the RISC core executes lock-state-machine logic in well under 1 ms response time, satisfying real-time access-control requirements.
Recommended
Remote Control Transmitter
The PIC12CE519-04/P serves as the encoder MCU in 4-button infrared remote controls for TVs, fans, and consumer appliances. Its 6 I/O pins map directly to 4 user buttons plus 1 IR-LED driver and 1 status LED; the 25 mA source capability drives the IR LED without a transistor. RISC execution at 1 us per instruction generates accurate 38 kHz carrier timing using the CCP module, while Sleep mode at <1 uA quiescent current provides years of battery life from two AAA cells. The OTP memory locks firmware to prevent cloning, important for branded remote controls. The 8-PDIP package is hand-solderable for low-volume repair and replacement.
Recommended
Battery Charger Indicator
The PIC12CE519-04/P integrates battery-charger LED state indication with voltage monitoring in a compact 8-PDIP form factor. The internal ADC is not present on this baseline device, but comparator-based voltage detection with an external resistor divider monitors battery voltage; 6 I/O pins drive up to 6 status LEDs at 25 mA each (or use Charlieplexing for up to 12 LEDs). On-chip EEPROM retains last-charging-state across battery swaps, and Sleep mode plus brown-out reset protect the controller during deep discharge. OTP programming locks the charging algorithm to prevent field modification, important for safety-certified battery products.
Recommended
Appliance Timer Controller
The PIC12CE519-04/P handles timing functions in washing machines, dishwashers, and microwave ovens where the 1.5 KB OTP program memory stores state-machine logic for cycles up to several hours. The internal 4 MHz RC oscillator provides timer accuracy sufficient for +/- 1% timing, while on-chip EEPROM stores user-set cycle preferences. The 6 I/O pins directly drive relays, buzzers, and 7-segment display segments at 25 mA. Watchdog timer prevents hang-up in high-EMI appliance environments. The 8-PDIP package is robust for the mechanical-stress environment inside consumer appliances.
Recommended
Sensor Interface Front-End
The PIC12CE519-04/P serves as a low-cost front-end MCU for industrial sensor modules reading temperature, humidity, or 4-20 mA loops with on-chip comparator and SSP peripherals. The 1.5 KB OTP program memory holds linearization tables and Modbus-like serial framing, while 41 bytes RAM provides scratch space for sensor calibration. The SSP module supports SPI or I2C connection to external ADC or sensor ASICs, and 25 mA I/O drives 4-20 mA loop excitation when used with a sense resistor. The 0C to +70C operating range covers most commercial and light-industrial environments.
Recommended
LED Display Driver Controller
The PIC12CE519-04/P drives Charlieplexed LED arrays up to 12 LEDs using only 4 I/O pins (leaving 2 for buttons or status), with 25 mA per-pin drive eliminating external transistors for small-indicator LEDs. The 1.5 KB OTP stores animation patterns, and on-chip 16-byte EEPROM saves user brightness preferences across power cycles. The CCP module in PWM mode provides software-defined LED dimming without external PWM controllers. Sleep mode plus interrupt-on-pin-change enables battery-powered decorative lighting with months of battery life from 2 AA cells.
Recommended
Smart Card / RFID Reader Interface
The PIC12CE519-04/P serves as a low-cost microcontroller in proximity-card readers and RFID access controllers, where 1.5 KB OTP holds the card-protocol state machine, 41 bytes RAM buffers card responses, and the 16-byte EEPROM stores access keys or reader IDs. The 6 I/O pins interface directly to a 125 kHz or 13.56 MHz RFID front-end IC via SPI using the on-chip SSP module, and one I/O drives a buzzer or LED for read-confirmation feedback. Brown-out reset and watchdog timer ensure reliable operation in electrically noisy access-control installations.
Recommended
Toys and Educational Electronics
The PIC12CE519-04/P fits hobbyist electronics, robotics kits, and educational microcontroller boards thanks to its 1.5 KB OTP program memory (sufficient for many beginner projects), simple RISC instruction set (only 33 instructions), and breadboard-friendly 8-PDIP package. The 6 I/O pins drive LEDs, read pushbuttons, and bit-bang simple serial protocols for student projects. On-chip 16-byte EEPROM allows persistence demos, and the internal 4 MHz RC oscillator eliminates crystal cost. Commercial-grade 0C to +70C temperature range covers classroom and hobby environments. Cost below USD 1.50 at qty 1000 makes it accessible for educational deployments.
Recommended
Recommended Products Summary
Engineering reference data for PIC12CE519-04/P β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12CE518-04/P | PIC12F509-04/P | PIC12C508A-04/P | PIC12C509A-04/P |
|---|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory Type | OTP (1.5 KB) | OTP (1.5 KB) | Flash (1.5 KB) - reprogrammable | OTP (768 B) | OTP (1.5 KB) |
| Program Memory Size | 1.5 KB (1K x 12) | 1.5 KB (1K x 12) | 1.5 KB | 768 B (512 x 12) | 1.5 KB (1K x 12) |
| Data RAM | 41 B | 41 B | 41 B | 25 B | 41 B |
| Data EEPROM | 16 B | None | None (flash emulation) | None | None |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 |
| I/O Sink/Source Current | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
Key Differentiators
- Includes 16-byte on-chip EEPROM (vs PIC12C509A-04/P)
- Pin-compatible flash upgrade path available (vs PIC12C508A-04/P)
- Calibrated internal 4 MHz RC oscillator (vs PIC12C508A-04/P)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (Pin 8), using a wide ground trace to minimize inductance. For battery-powered designs, add a 10 uF bulk capacitor on VDD to support the inrush during oscillator startup. The internal 4 MHz RC oscillator requires 1-2 ms stabilization after VDD crosses 2.5 V; rely on the on-chip Power-on Reset (POR) and Brown-out Reset (BOR) to keep the device in reset until VDD is stable. If the application sees slow VDD ramp times (>10 ms), enable PWRT (Power-up Timer) in the configuration word.
Reserve PCB space for an ICSP (In-Circuit Serial Programming) header even on production boards: pin 6 (ICSPDAT), pin 5 (ICSPCLK), pin 3 (MCLR/VPP), pin 8 (VDD), pin 7 (VSS). A standard 5-pin 0.1 inch header with MCLR pulled to VDD through a 10 kohm resistor allows MPLAB ICD3 or PICkit 3 to program the device. Since OTP cannot be erased, an unprogrammed prototype board cannot be reused - always keep at least one board in reserve for firmware development with a windowed (JW) package version.
GP3 is INPUT-ONLY on PIC12CE519 and cannot be configured as an output; verify I/O assignments before committing to PCB layout. The 25 mA per-pin drive is shared across the entire port - the total source current for all pins must not exceed 125 mA and total sink current must not exceed 200 mA, per the datasheet absolute maximums. OTP programming is one-time-only: a single bad bit blows the rest of the device. For low-volume production, consider PIC12F509 flash variant which is pin-compatible and costs only ~20% more.
When using the internal 4 MHz RC oscillator, calibrate the OSCCAL register to the application supply voltage - the factory calibration value is set at 5 V and frequency can drift up to +/- 5% at 3.3 V operation. For UART or timing-critical applications, read the OSCCAL value from the last executed program memory location (0x7FF or similar) before any code modification. The CCP module in PWM mode can compensate for some oscillator error but adds firmware complexity.
Compliance Information
RoHS/REACH compliance status not explicitly stated in the verified web data; assume compliant for through-hole PDIP parts in modern Microchip production but verify with Microchip product compliance database. Not AEC-Q100 qualified - this is a commercial-grade part. For automotive applications, use PIC12CE519-04I/P (industrial) or PIC12F509 variants with -40C to +125C temperature range.
